Help! So I been riding on 135i Springs! (335i)
 

Long story short, I ordered H&R springs for my car, asked for sport drop HR part # 50490-4. Got them installed (year ago) and the car was SLAMMED. So I thought O well, maybe they sent the race springs, I liked the look so left it. Few nights ago, we discovered that the part # on the springs is 29187 which correspond to 135i springs! Thats a horrible mistake on their part, so I emailed the company I got them from, they called HR Springs and basically they are saying the springs are correct? What are they saying that their website has the wrong part numbers? That the internet, ebay, yahoo etc has the wrong part numbers? What are your guys thoughts, am I right here? Or infact do I have the right springs?

It shouldn't make much of a difference, however if ordered a less agressive spring.. and now you find out that the spring rate is too agressive and blown your shocks.. then you might have something to complain.

However you probably have to chalk it up to experience.